Flipside is valid Scrabble Word

Is flipside a scrabble word?
Official Scrabble Players Dictionary NO
Official Tournament and Club Word List NO
Collins Scrabble Words YES
Is flipside valid Words with Friends?
Words with Friends YES

Definitions for FLIPSIDE in dictionary:

Words related to FLIPSIDE

flipsides15

Words that contain FLIPSIDE

flipsides15
Find what other words can be done using letters: "flipside"
https://scrabble-word.com/finder/flipside
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